James t



JAMES T. SARGENT, OF CHICAGO, ILLINOIS.

PIPE.

Specification of Letters Patent.

Patented June 10, 1913.

Application filed October 30, 1912. Serial No. 728,709.

To all whom t may concern.'

Be it known that I, Janne T. SARGENT, residing at Chicago, in the countyof Cook and State of Illinois, a citizen of the United States, haveinvented or discovered certain new and useful Improvements in Pipes, ofwhich improvements the following is a specilication.

The invention described herein relates to certain improvements in pipesand has for its object an arrangement of passages extending from thebowl, whereby the hot smoke containing the nicotin in a gaseous form isdiverted from its ldirect path to the mouth piece and is caused tocirculate in a chamber sufficiently large to allow of a comparativelyfree expansion and consequent cooling and partial condensation of thenicotin.

`It is a further object of the invention to provide for a mixing of airwith the hot smoke prior to its flowing into the nicotin chamberwhereby7 a further cooling of the smoke is effected.

The invention also has for its object certain features of construction,which will be hereinafter mo-re fully described and claimed.

.In the accompanying drawings forming a part of this specification,Figure l is a sectional view of a pipe embodying my improvements; Fig. 2is a similar view illustrating the manner of embodying my improvementsin pipes now in general use; Fig. 3 is a sectional view illustrating a.modification of the construction shown in Fig. l; Fig. 4 is a sectionalview showing my improvement embodied in the outer section of the stem,and Fig. 5 is a transverse view on a plane indicated by the line V-VFig. l; Fig. 6 is a sectional view on a large scale of a portion of thestem shown in Fig. l and Fig. 7 is a similar view of portions of thesteml and mouth piece shown in Fig. 4, both. figures showing thearrangement of passages for the introduction of air into the smoke.

It will be understood that in the following description the term stemwill include all of the structure from the bowl to that portion held inthe mouth unless otherwise specifically stated.

In the practice of my invention, a passage 1 preferably of small bore isformed along the upper portion of the stem 2 and communicates at itsforward end with the bowl 3. Below the bore or passage, a recess orpocket 4 is formed in the stem, and extends parallel with the passage lfor a substantial distance. A port or opening 5 preferably about twicethe diameter of the passage 1 is formed in the stem, connecting thepassage 1 with the pocket 4 at a distance from the point where the smokeenters the passage and from the front end of the pocket. The smoke flowsfrom the pocket through a passage 6 formed in the outer portion Of thestem preferably along the upper portion of the stem and connecting atone end with the pocket closely adjacent to its upper wall and at itsopposite with the outlet from the stem. As is well known the nicotin isin a vaporous condition as it comes from the bowl of the pipe but aconsiderable Portion will quickly condense when the temperature of thesmoke is lowered.

A reduction of temperature canv be effected in my improved pipe, firstby contact with the walls of the passage 1 which is made quite small,its diameter being a sixteenth of an inch as compared with passages ofone eighth of an inch in diameter found in pipes as at presentconstructed. The passage l being small the area of its innel` surfacewill be large relative to the quantity of smoke passing through, andhence a prog5 portionally greater reduction of temperature of the smokewill be edected.

The port 5 is preferably connected with the pocket 4 by an angularpassage in the plug like extension 7 on the outer section 90 of thestem. The portion 8 of the angular passage has a ldiameter approximatelythat of the port 5 with which said portion is brought into alinementwhen the plug 7 is inserted in the rear end of the pocket 4. The outerend of the portion 8 is reamed out or enlarged so as to avoid a completeor` partial closing of the port 5 in case the outersection of the stemis not accurately connected to the bowl. The portion 9 of the 10oangular passage in the plug 7 extends forwardly from the portion 8through the end of the plug, and is preferably made of the same size asthe passage l. As the port 5 and the portion 8 are made larger than the105 passage l the smoke in passing through the port and portion S willexpand mo-re than twice its previous volume and will be proportionallycooled. As the portion 9 of the angular passage is of less diameter thanthe portion 8 the smoke will re-acquire a portion at least of thevelocity it had in the passage 1 and will enter the pocket 4 in the formof a small jet. It is believed that this j et with air from vent at 10will have sufficient velocity to traverse the entire length of thepocket, which is made of such length and diameter that the smoke willexpand to many times the volume it had prior to reaching the pocket. Byreason of this expansion there will be such a reduction of temperaturethat a large portion of the nicotin will be condensed.

The passage 6 in the outer section of the stem is preferably made of thesame diameter as the passage 1 so that the flow of smoke into andout ofthe pocket 4 will be approximately equal. As before stated it ispreferred that the passage 6 should be formed above the center' line ofthe outer sec tion of the stem so that when the pipe is laid on its sidethere will be little if' any liability of the liquid contents of thepocket entering the passage 6. y

There is a two fold advantage in making the passage 6 of smalldiameter', first very little saliva will enter it and second whateversaliva flows through it, will be brought intimately into contact withthe oppositely flowing smoke and will wash out impurities and take up aconsiderable percentage of nicotin.

A further cooling ofthe smoke and consequently a more effectivecondensation of the nicotin can be Ieffected by the introduction of airinto the smoke preferably just prior to its entrance into the pocket 4,where it will collect on thev walls and be retained out of line of flowof the smoke. By reason of this early condensation of the nicotin andits retention in the pocket, the clogging of the passage leading fromthe pocket is largely prevented-` The introduction of the air can beconveniently effected where the stein is made in two sections, byextending the passage 1 to the end of the bowl section o-f the stem asshown at 10. When it is desired to vary the quantity of air the relativepositions of the forward end of the mouth section of the stem and therear end of the bowl section of the stemcan be changed, and by bringingthe ends of these parts tightly together, the outer end of the passagestem can be completely closed. In order to avoid the deposition ofnicotin adjacent to the inner end of the passage 6, especially whencondensation is promoted by the introduction of air, it is desirablethat the smoke should be directed forwardly as it enters the pocket.

It is characteristic of my impro-vement that the condensed nicotin andany saliva that may flow through the passage 6 will be held in thepocket, and the ports of passages y for the entrance and escape of thesmoke are so located that the saliva, etc., will not flow into the samewhen the pipe is laid fiat.

In lieu of embodying my improvements in the body section of the stem,they can be incorporated in the outer' section of the stem as shown inFig. 4. In my preferred con struction, a passage is bored from the innerend of this section for a sutlicient distance to form a pocket 12, theforward end of which is plugged. A small passage 15 is c bored in thissection extending parallel with and above the pocket to which it isconnected by a port or passage 1G. The mouth piece 17 is provided with aplug like extension 18 in which is formed an angular passage 19 toconnect port 16 with the pocket 1Q from which the smoke is drawn throughthe passage 20. The flow of air into the passage 15 and thence to thepocket is controlled by the shoulder 21 on the mouth piece.

It will be observed that the pocket 4 corresponds in location, shape anddimension to the socket for the reception of the outer section of thestem in pipes no-w in universal use, but in my improvement this pocketis not connected at its forward end to the bowl. Hence my improvementscanbe readily applied to the pipes now in use by sealing the smallpassage connecting the bowl and socket, and by forming the passages 1and 10 and port 5 in the bowl section of t-he stem. The outer section ofthe present pipe can be adapted for the practice of my invention byforming the angular passage 8 and 9 in the portion of the stem sectionadapted to fit in the socket of the bowl sections.

It is characteristic of my improvement that the cooling of the smokewhether by contact with the wall of the small passage 1, its repeatedexpansions andthe introduction of air, is effected prior to its entranceinto the pocket or within the latter. It is also characteristic of myimprovement that the smoke and air flow in opposite directions to thepoint of meeting at the port 5, which having a capacity greater than thecombined capacities of the passages through which the smoke and airflow, will afford ample opportunity for the thorough commingling of thetwo.

I claim herein as my invention:

1. A pipe having in combination a bowl and stem, said stem having a mainsmoke passage of small substantially uniform cali ber connected to thebowl, and with a pocket of large capacity relative to the passage, asmoke reversing passage extending from the main passage and arranged todeliver the smoke into the rear end of the pocket and to direct ittoward the forward end, a portion of the reversing passage between itsends being made of larger diameter than the main passage, and an outletpassage extendingfrom the rear end of the pocket through the mouth pieceof the stem.

2. A pipe having in combination a bowl and stem, said stem having a mainsmoke passage of substantially uniform small cross-sectional dimensionsextending from the bowl, a pocket of large capacity relative to saidpassage and connected thereto, and an outlet passage extending from thepocket, and means for introducing air into the stream of smoke prior toits entrance into the pocket and in opposition to the direction of liowof the smoke.

3. A pipe comprising a bowl and stem portion and a mouth piece portion,said stem portion being bored to provide a smoke passage leading fromthe bowl, an expansion chamber, and a reverse passage connecting thefirst passage and chamber, and means providing for the admission of airto mix with the smoke prior to its entrance into the expansion chamberand controlled by the adjustment of the mouth piece.

il. A pipe having in combination a bowl, a stem formed in sections, apocket formed in the bowl section of the stem, a main smoke passageextending from the bowl to the pocket the pocket being of large capacityrelative to said passage, an outlet passage extending from the pocketand through tie mouth section of the stem, means for introducing airinto the stream of smoke prior to its entrance into the pocket, theinflow of' air being controlled by the adjustment of one of the stemsectionsrelative to the other.

5. A pipe having in combination a bowl and stem, said stem having a mainsmoke passage extending from the bowl, a pocket of large capacityrelative to said passage and connected thereto, and an outlet passageextending from the pocket, and means for directing a stream of air intothe smoke in the main passage at an angle to the direction of flow ofthe smoke.

6. A pipe having in combination a bowl and a stem, said stem having amain smoke passage connected to the bowl, a pocket of large capacityrelative to said passage, a smoke reversing passage connecting the mainpassage to the rear end of the pocket, a passage for introducing airinto the main passage adjacent to its connection with the reversingpassage, and an outlet passage extending from the rear end of thepocket.

7. A pipe having in combination a bowl and a stem, said stem having amain smoke passage connected to the bowl, a pocket of large capacityrelative to said passage, a smoke reversing passage connecting the mainpassage to the rear end of the pocket, said reversing passage having theportion adjacent to the main passage of larger caliber than the mainpassage, a passage for introducing air into the main passage adjacent toits connection with the reversing passage, and an out-let passageextending from the rear end of the pocket.

8. A pipe having in combination a bowl and a stem formed in twosections, one section having a main passage of small caliber connectedto the bowl, and having a pocket of large capacity relative to the mainpassage and open at its rear end, the outer Section having a plug-likeextension adapted to close the rear end of the pocket, and having apassage adapted to register at one end with a port extending from thepassage in the first section and to direct smoke toward the front end ofthe pocket, said outer section having an outlet passage extending fromthe end of the plug to the mouth piece.

9. A pipe having in combination a bowl and a stem formed in twosections, one section having a main passage of small caliber connectedto the bowl, and a pocket of large capacity relative to said mainpassage and open at its rear end, and connected to the main passage by aport of larger caliber than the main passage, said stem section beingalso provided with an air inlet passage connected to the main passage ata point adjacent to the port from the latter, the outer section having aplug-like extension adapted to fit tightly in the rear end of the pocketand provided with angular passage, one end of which will register withthe said port from the main passage in the first section, and theopposite end opening through the end of the plug, said outer sectionhaving an outlet passage extending from the end of the plug to the mouthpiece.

l0. A pipe having in combination, a bowl and a stem formed in twosections, one section having a main passage of small caliber connectedto the bowl, and a pocket of large capacity relative to said mainpassage and open at its rear end, and connected to the main passage by aport of larger caliber than the main passage, said stem section beingalso provided with an air inlet passage connected to the main passage ata point adjacent to the port from the latter, the outer section having aplug-like extension adapted to lit tightly in the rear end of the pocketand provided with angular passage, one end of which will register withthe said port from the main passage in the first section, and theopposite end opening through the end of the plug, said outer sectionhaving an outlet passage extending from the end of the plug to the mouthpiece, and having a shoulder adapted to regulate the inflow of air.

In testimony whereof, l have hereunto set my hand.

JAMES T. SARGENT.

Witnesses:

ALICE A. TRILL, TI-Ios. B. Jorcn.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D. C.

